Abstract

B chromosomes have attracted the attention of Neotropical fish cytogeneticists in recent years, both for their remarkable occurrence in this group and also because of the interest in studies of the genetic structure and role played in the genome of these organisms. The aim of this study was to report the first occurrence of supernumerary chromosomes in Prochilodus argenteus (Agassiz, 1829), this being the fifth carrier species among thirteen within the genus Prochilodus (Agassiz, 1829). The extra elements identified in this species are small sized heterochromatic chromosomes characterized by a low mitotic instability index, being very similar to other supernumerary chromosomes described in the species of the genus Prochilodus. Morphology, structure and dispersion of the supernumerary genomic elements which occur in species of this genus are discussed aiming to better understand aspects involved the origin of supernumerary chromosomes and the differentiation process and relationships among species of this family.

Addeddate

2025-03-16 16:43:51

Bhl_virtual_titleid

210879

Bhl_virtual_volume

v.9:no.1 (2015)

Call number

10_3897_CompCytogen_v9i1_8587

Call-number

10_3897_CompCytogen_v9i1_8587

Foldoutcount

0

Genre

article

Identifier

bchromosomesspe9port

Identifier-ark

ark:/13960/s201wx22bmf

Identifier-bib

10_3897_CompCytogen_v9i1_8587

Identifier-doi

10.3897/CompCytogen.v9i1.8587

Issue

1

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

77

Page_number_module_version

1.0.5

Page_range

79-87

Pages

9

Pdf_degraded

invalid-jp2-headers

Pdf_module_version

0.0.25

Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

Comparative Cytogenetics 9(1)

Year

2015

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